3 ms·
Although even with one unit, having 2x the registers of 2x the width means you can fit a significantly larger working set without spilling to cache... So there
by reitzensteinm 9y ago
Although even with one unit, having 2x the registers of 2x the width means you can fit a significantly larger working set without spilling to cache...
So there still would be benefit even if it's just one unit.
- gpderetta 9y agoyou also get generalized predication which is nice for ease of vectorization. Still, it is very likely that these CPUs have two full vector ALUs per core.